2017 News and Updates

June 14, 2017
ISS Georeferenced Digital Camera Images from South Africa wildfires 2017
Click here to view the full image collection and download  high quality georeferenced images. This collection of digital camera images was taken by astronauts onboard the International Space Station on June 14th, 2017, then manually georeferenced by members of the Earth Science and Remote Sensing Unit at NASA Johnson Space Center

 

June 7, 2017
MISR-MINX height map smoke plume.
Wildfire outbreaks can generate a significant amount of atmospheric aerosols that can have regional to global impacts on Earth’s energy balance and surface temperature. To determine the influence of wildfires, accurate plume heights are needed, but are difficult to obtain in areas of significant cloud cover. Stereo images from NASA’s Multi-Angle Imaging Spectroradiometer (MISR) make it possible to retrieve plume heights using parallax by constraining the smoke plume layer height. When the retrieval height is significantly below the Lifting Condensation Level (LCL), the effects of cloud contamination are often reduced. The Knysna Wildfire began the evening of June 6, 2017 and by June 07, consisted of 26 fires. These fires were fanned towards residential areas by strong winds from a cyclone to the west. The towns of Belvidere, Breonton-on-Sea, and Rheenendal were evacuated after news that a family of three passed away in the fire on June 6. The smoke observed by MISR on June 7 was injected at 3+ km. At this height, the aerosols can escape the boundary layer and enter the middle Troposphere, causing enhanced regional cooling and increased long-range aerosol transport. MISR height profiles downwind from near-source.  

 

May 9, 2017
Landsat 7 image of flooding near near St. Peters, Missouri on May 9th, 2017.
Landsat 7 image of flooding near near St. Peters, Missouri on May 9th, 2017. Landsat 8 image showing the same area on April 28, 2016 for comparison. In late April and early May 2017, heavy rains in the Midwest gave way to rising rivers and flooding. These false-color images from Landsat satellites show one affected area near St. Peters, Missouri, northwest of St. Louis.

 

May 9, 2017
GPM IMERG 7 day rainfall accumulation ending on May 7th, 2017 for the Quebec region.
GPM IMERG 7 day rainfall accumulation ending on May 7th, 2017 for the Quebec region. 1-, 3- and 7-day accumulations are available as shapefile and GeoTIFF files for the affected areas: https://pmm.nasa.gov/precip-apps Time series of the affected areas are available through NASA Giovanni: https://giovanni.sci.gsfc.nasa.gov/giovanni/  

 

May 9, 2017
GFMS flood detection / intensity maps for the Quebec region on May 1st, 5th, and 8th 2017.
GFMS flood detection / intensity maps for the Quebec region on May 1st, 5th, and 8th 2017. GFMS flood inundation map for May 8th, 2017 (top) and flood forecast for May 12th, 2017 for the Quebec region.

 

May 8, 2017
MODIS true-color image of floods in Quebec from May 8, 2017.
Its been pretty overcast over much of eastern Canada the past several days - all of Quebec, and eastern Ontario, as in the above MODIS true-color image. Clouds have shifted slightly, but not dramatically over the past few days. Central Ontario is clear, but we dont see much there - there's a spot of "flooding" north of Toronto (by Barrie), but this is simply a wetland that is not in the MOD44W layer so shows up as flood.   

 

May 3, 2017
MODIS image of flooding in Missouri.
Terra MODIS image of Missouri acquired on April 25th, 2017. Terra MODIS image of Missouri floods acquired on May 2nd, 2017. On May 2, 2017, the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite acquired this false-color image of flooding along several tributaries of Mississippi River. Flood water appears blue and black; forested areas are green. Fields without much vegetation are brown. For comparison, the image at the top shows these watersheds on April 25, 2017, under more typical conditions for the season. Turn on the image comparison tool to see the changes.

 

April 7, 2017
Example ISS image from Peru Flooding 2017.
Click here to view the full image collection and download  high quality georeferenced images. This collection of digital camera images was taken by astronauts onboard the International Space Station on April 7th, 2017, then manually georeferenced by members of the Earth Science and Remote Sensing Unit at NASA Johnson Space Center.

 

April 28, 2017
Comparison of 2016 Landsat 8 mosaic image with recent Landsat image showing burn scars.
Download Hi-Res Image (.jpg, 15MB) These images from the Landsat 8 satellite show the effects of the recent wildfires in Guatemala on the Guatemala Mayan Biosphere Reserve. The left image is a mosaic composite of Landsat images from 2016, and the right image is a Landsat 8 image from April 19, 2017. 

 

April 1, 2017
Aqua true-color image overlaid with active-fire detections, shown in red, take from MODIS (onboard Terra and Aqua) and VIIRS (onboard Suomi-NPP), showing smoke streaming from wildfires in Guatemala on April 1st 2017.
Fires started to burn in early March in the protected regions of Sierra del Lacandón National Park (also Laguna del Tigre), which is located in the tropical rain forest in the north west of Guatemala.   Moderate Resolution Imaging Spectroradiometer (MODIS) and Visible Infrared Imaging Radiometer Suite (VIIRS) data are being used to locate fire lines that are difficult to see from the ground, and these data are also being used to analyze long term fire trends.  One Guatemalan weekly report highlighted the improved value of VIIRS data to locate small fires and the valuable long–term prospective offered by MODIS. Aqua true-color image overlaid with active-fire detections, shown in red, taken from MODIS (onboard Terra and Aqua) and VIIRS (onboard Suomi-NPP), showing smoke streaming from wildfires in Guatemala on April 1st 2017.

 

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